The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 15, 1980
Filed:
May. 23, 1978
Applicant:
Inventors:
Rudiger Kurtz, Immenstaad, DE;
Christoph Link, Ravensburg, DE;
Wolfgang Trudel, Bad Waldsee, DE;
Siegfried Reutter, Gerbertshaus, DE;
Assignee:
Sulzer Brothers Ltd., Winterthur, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21F / ; D21F / ;
U.S. Cl.
CPC ...
162343 ; 162216 ;
Abstract
The head box has a plurality of distribution pipes for delivering pulp with each distribution pipe communicating via a plurality of feed pipes with a row of flow ducts in a block having a plurality of rows of flow ducts. The feed pipes have equal flow resistance and each has a pin-shaped part at the inlet end which acts to anchor the feed pipe in place. Each pin-shaped part also carries a cam which projects into a distribution pipe to keep the inlet to the respective feed pipe free of fibers.